With regards to the size of the dog (larger dogs age faster), somewhat more elegant he has reached 6 years of age, he will be medically classified as a senior dog. https://Www.Evernote.com/shard/s499/sh/745c682d-c710-f5a1-c9a4-070ed871d7cf/GmxK7PeCtCl7-0qF7nHHhMCZGkv26EmELvFgH2VjZFW4rTtCRFF91Ys2Ng